Improved machine for turning balls or mandrels



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l described,

wrLLrA'nrvnwsuAn, or PHILADELPHIA, PENNSYLVANIA, Assia-Non To 'MORRIS, TASKER & C0., OF SAME PLACE.

.Leners Paten: N 100,654, camz Maren s, 1870.

n /rpnovnn moms yFoa TURNINGBALLS on MANDRBLS.

l The Schedulerefen'ed to these Letters Patent and making part of the same I, WILLIAM NEivsHAM, orare city 0f`Pr|iiadeIpnia, andState of Pennsylvania, have invented an I mproved Machine for Milling,r Balls, lof lwhich the following is a Specification.

I n the process of manufacturing metal tubes, a long liron har over which the tubes pass is used, and upon the eirdfof' this bar a loose mandrel' is placed. This is usually runde of iron or steel, sized and made smooth. 'lfhemandrel is held up `to its position between the rolls bya guard at the other end of theiron har. This nmndrel,among-tubefmakera is called a ball. A

lheesp'ccial object of' this invention is finishing the halls in'au'expeditio'us and .accurate manner. Itis applicable, however, to the milling of' other devices.

Figure 1 is aside elevation "Lof themillirig-machine.V

FgureZ is a front view'of' ithe same. Figure 3 is a plan view. Figure 4 is a plan view ofthe female milling-tool. Figure 5 is a` crgosssectionat the line x a: of' fig. 4. Like letters inall tlre`gtigrn'es indicate the same parts. r i Ais the standing part of' the machine. f B isavert-ical sha-ft, which is guided by the bearing C.

The saidshaft has n `its lower end the ball D, the

shaft having a square, a, .to receive the ball. The shaft B receives a "rotarymotiou by means of' iheshaft E, and ruiter or bevel-wheels F F",during rale mining of `ai@ ban D, the @ad 'shaft n being pmpelled by'meausof tlrecrauk G or otherwise. H is afemale milling cutter-head, which is provided with a series of'cu-tters, I, arranged in radial grooves,

and adjustable by means of the set-screws J, or anyV .other suitable device, as seen in detail in figs. 4and 5.

The cutter-head is secured to the base lof the standard A by means of screws c c and flanges d d, as seen in fig. 3.

K is a forked lever for elevating and depressing the slraftB, being jointed to the staudardA by means of' the fixed lugs e e and rod L, and having ajoiut connection with the said shaft B by means of' the loose'` sleeve M`(bet-ween the collars N) and the radial pins Y ff, which project from the sleeve into .the slots g of l the lever'.

The operation is as follows: `The ball Din its rough state is placed on the-square a on the lower end of the revolving shaft B, and the cutters I are "adjusted, by means of the set-screws J, for taking off' the rough surface of the ball, the shaft B being revolved iu the direction of the arrows by mea-ns f' the crank G on the shaft E, operating through the ruiter-wheels F F', and,` the shaft being depressed .by means of'v the lever' K, for the advancement of' the ball D betivleen the'cutters.

When thel hall has been operated onby the cutters throughouttlre whole of. its cylindrical portion, the shaft B `is elevated to its first position seen in figs. l;

and2-,fthecutters I readjustcd, if necessary, for au-,

other size, and the ball D passed through them, as

above explained, to be brought to its proper size, and i its surface completely smoothed.4 l

What I claim as my invention, and desire to secure by Letters Patent, 'islhe combination of the cutter-head H and the adjustable radial cutters J with the shaft B, squared at the end as shown at a, thelever K, for Invingvsaid shaft toward and from said eutter-head, and mechanvism torotate said shaft, substantially as described.

In testimony that theabove is myv invention, I` have hereunto secmylraud and affixed my seal this 12th day of' January, 1870. l r

WM. NEWSHAM. `[L s] Witnesses:

STEPHEN Us'rrcK, THOMAS J. BEWLEY. 

